Unlike the numerous OEM produced and otherwise forgettable shells out there, Aura is made of slightly thicker plastic. It snaps onto the side edges of the iPhone 5, but leaves the top and bottom fully exposed. While this guarantees full access to the buttons and ports, it also means there’s potential for the aluminum to get scratched. Unlike most shells, Aura does include built-in button protection, but since the covers are flush with the rest…